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<html>
<head>
  <meta charset="UTF-8">
  <title>paper-icon-button basic tests</title>
  <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0">

  <script src="../../webcomponentsjs/webcomponents-lite.js"></script>
  <script src="../../web-component-tester/browser.js"></script>

  <link rel="import" href="../../iron-icons/iron-icons.html">
  <link rel="import" href="../paper-icon-button.html">

</head>
<body>

  <test-fixture id="TrivialIconButton">
    <template>
      <div style="line-height:30px;">
        <paper-icon-button id="fab1" icon="add"></paper-icon-button>
      </div>
    </template>
  </test-fixture>

  <test-fixture id="SrcIconButton">
    <template>
      <paper-icon-button src="add.png"></paper-icon-button>
    </template>
  </test-fixture>

  <script>

    var b1;
    var b2;

    function centerOf(element) {
      var rect = element.getBoundingClientRect();
      return {left: rect.left + rect.width / 2, top: rect.top + rect.height / 2};
    }

    function approxEqual(p1, p2) {
      return Math.abs(p1.left - p2.left) <= 2 && Math.abs(p1.top-p2.top) <= 2;
    }

    setup(function() {
      b1 = fixture('TrivialIconButton').querySelector('#fab1');
      b2 = fixture('SrcIconButton');
    });

    test('applies an icon specified by the `icon` attribute', function() {
      assert.strictEqual(!!b1.$.icon.src, false);
      assert.ok(Polymer.dom(b1.$.icon.root).querySelector('svg'));
    });

    test('applies an icon specified by the `src` attribute', function() {

      assert.strictEqual(!!b2.$.icon.src, true);
      assert.ok(b2.$.icon.src);
    });

    test('renders correctly independent of line height', function() {
      assert.ok(approxEqual(centerOf(b1.$.icon), centerOf(b1)));
    });
  </script>
</body>
</html>
